CVE-2019-3644 | MWG scanners updated to address CVE-2019-9517

McAfee Web Gateway (MWG) earlier than 7.8.2.13 is vulnerable to a remote attacker exploiting CVE-2019-9517, potentially leading to a denial of service. This affects the scanning proxies.

Published: 2019-09-11 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2019-3644 is rated Moderate Risk (60.5/100): CVSS High severity, with medium exploitation likelihood (EPSS 2.39%). EPSS rose +1.93% over the last day, indicating growing attacker interest. Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2019-3644

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.46% 2.39% +1.93%
2 2025-09-08 0.66% 0.46% -0.20%
3 2025-04-07 — 0.66% —

Full EPSS history (11 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2019-3644

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 3.6 [email protected]
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 3.6 [email protected]
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2019-3644

Affected software / configurations for CVE-2019-3644

Vendor Product Version Raw CPE
mcafee active_response 1.0.0 cpe:2.3:a:mcafee:active_response:1.0.0:*:*:*:*:*:*:*
mcafee active_response 1.1.0 cpe:2.3:a:mcafee:active_response:1.1.0:*:*:*:*:*:*:*
mcafee active_response 2.0 cpe:2.3:a:mcafee:active_response:2.0:*:*:*:*:*:*:*
mcafee active_response 2.0.1 cpe:2.3:a:mcafee:active_response:2.0.1:*:*:*:*:*:*:*
mcafee active_response 2.1 cpe:2.3:a:mcafee:active_response:2.1:*:*:*:*:*:*:*
mcafee active_response 2.2 cpe:2.3:a:mcafee:active_response:2.2:*:*:*:*:*:*:*
mcafee active_response 2.3 cpe:2.3:a:mcafee:active_response:2.3:*:*:*:*:*:*:*
mcafee active_response 2.4 cpe:2.3:a:mcafee:active_response:2.4:*:*:*:*:*:*:*
mcafee advanced_threat_defense 4.0 cpe:2.3:a:mcafee:advanced_threat_defense:4.0:*:*:*:*:*:*:*
mcafee advanced_threat_defense 4.2 cpe:2.3:a:mcafee:advanced_threat_defense:4.2:*:*:*:*:*:*:*
mcafee advanced_threat_defense 4.4 cpe:2.3:a:mcafee:advanced_threat_defense:4.4:*:*:*:*:*:*:*
mcafee advanced_threat_defense 4.6 cpe:2.3:a:mcafee:advanced_threat_defense:4.6:*:*:*:*:*:*:*
mcafee enterprise_security_manager 10.2.0 cpe:2.3:a:mcafee:enterprise_security_manager:10.2.0:*:*:*:*:*:*:*
mcafee enterprise_security_manager 10.3.4 cpe:2.3:a:mcafee:enterprise_security_manager:10.3.4:*:*:*:*:*:*:*
mcafee enterprise_security_manager 10.4.0 cpe:2.3:a:mcafee:enterprise_security_manager:10.4.0:*:*:*:*:*:*:*
mcafee enterprise_security_manager 11.0.0 cpe:2.3:a:mcafee:enterprise_security_manager:11.0.0:*:*:*:*:*:*:*
mcafee enterprise_security_manager 11.1.0 cpe:2.3:a:mcafee:enterprise_security_manager:11.1.0:*:*:*:*:*:*:*
mcafee enterprise_security_manager 11.1.1 cpe:2.3:a:mcafee:enterprise_security_manager:11.1.1:*:*:*:*:*:*:*
mcafee enterprise_security_manager 11.1.2 cpe:2.3:a:mcafee:enterprise_security_manager:11.1.2:*:*:*:*:*:*:*
mcafee enterprise_security_manager 11.1.3 cpe:2.3:a:mcafee:enterprise_security_manager:11.1.3:*:*:*:*:*:*:*
mcafee enterprise_security_manager 11.2.0 cpe:2.3:a:mcafee:enterprise_security_manager:11.2.0:*:*:*:*:*:*:*
mcafee web_gateway >= 7.7.2.0, < 7.7.2.24 cpe:2.3:a:mcafee:web_gateway:*:*:*:*:*:*:*:*
mcafee web_gateway >= 7.8.2, < 7.8.2.13 cpe:2.3:a:mcafee:web_gateway:*:*:*:*:*:*:*:*
mcafee web_gateway >= 8.0.0, < 8.2.0 cpe:2.3:a:mcafee:web_gateway:*:*:*:*:*:*:*:*

References for CVE-2019-3644

cvelogic Threat Intelligence